1. 25 Feb, 2017 33 commits
  2. 24 Feb, 2017 7 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace · f1ef09fd
      Linus Torvalds authored
      Pull namespace updates from Eric Biederman:
       "There is a lot here. A lot of these changes result in subtle user
        visible differences in kernel behavior. I don't expect anything will
        care but I will revert/fix things immediately if any regressions show
        up.
      
        From Seth Forshee there is a continuation of the work to make the vfs
        ready for unpriviled mounts. We had thought the previous changes
        prevented the creation of files outside of s_user_ns of a filesystem,
        but it turns we missed the O_CREAT path. Ooops.
      
        Pavel Tikhomirov and Oleg Nesterov worked together to fix a long
        standing bug in the implemenation of PR_SET_CHILD_SUBREAPER where only
        children that are forked after the prctl are considered and not
        children forked before the prctl. The only known user of this prctl
        systemd forks all children after the prctl. So no userspace
        regressions will occur. Holding earlier forked children to the same
        rules as later forked children creates a semantic that is sane enough
        to allow checkpoing of processes that use this feature.
      
        There is a long delayed change by Nikolay Borisov to limit inotify
        instances inside a user namespace.
      
        Michael Kerrisk extends the API for files used to maniuplate
        namespaces with two new trivial ioctls to allow discovery of the
        hierachy and properties of namespaces.
      
        Konstantin Khlebnikov with the help of Al Viro adds code that when a
        network namespace exits purges it's sysctl entries from the dcache. As
        in some circumstances this could use a lot of memory.
      
        Vivek Goyal fixed a bug with stacked filesystems where the permissions
        on the wrong inode were being checked.
      
        I continue previous work on ptracing across exec. Allowing a file to
        be setuid across exec while being ptraced if the tracer has enough
        credentials in the user namespace, and if the process has CAP_SETUID
        in it's own namespace. Proc files for setuid or otherwise undumpable
        executables are now owned by the root in the user namespace of their
        mm. Allowing debugging of setuid applications in containers to work
        better.
      
        A bug I introduced with permission checking and automount is now
        fixed. The big change is to mark the mounts that the kernel initiates
        as a result of an automount. This allows the permission checks in sget
        to be safely suppressed for this kind of mount. As the permission
        check happened when the original filesystem was mounted.
      
        Finally a special case in the mount namespace is removed preventing
        unbounded chains in the mount hash table, and making the semantics
        simpler which benefits CRIU.
      
        The vfs fix along with related work in ima and evm I believe makes us
        ready to finish developing and merge fully unprivileged mounts of the
        fuse filesystem. The cleanups of the mount namespace makes discussing
        how to fix the worst case complexity of umount. The stacked filesystem
        fixes pave the way for adding multiple mappings for the filesystem
        uids so that efficient and safer containers can be implemented"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
        proc/sysctl: Don't grab i_lock under sysctl_lock.
        vfs: Use upper filesystem inode in bprm_fill_uid()
        proc/sysctl: prune stale dentries during unregistering
        mnt: Tuck mounts under others instead of creating shadow/side mounts.
        prctl: propagate has_child_subreaper flag to every descendant
        introduce the walk_process_tree() helper
        nsfs: Add an ioctl() to return owner UID of a userns
        fs: Better permission checking for submounts
        exit: fix the setns() && PR_SET_CHILD_SUBREAPER interaction
        vfs: open() with O_CREAT should not create inodes with unknown ids
        nsfs: Add an ioctl() to return the namespace type
        proc: Better ownership of files for non-dumpable tasks in user namespaces
        exec: Remove LSM_UNSAFE_PTRACE_CAP
        exec: Test the ptracer's saved cred to see if the tracee can gain caps
        exec: Don't reset euid and egid when the tracee has CAP_SETUID
        inotify: Convert to using per-namespace limits
      f1ef09fd
    • Linus Torvalds's avatar
      Merge tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux · ef96152e
      Linus Torvalds authored
      Pull drm updates from Dave Airlie:
       "This is the main drm pull request for v4.11.
      
        Nothing too major, the tinydrm and mmu-less support should make
        writing smaller drivers easier for some of the simpler platforms, and
        there are a bunch of documentation updates.
      
        Intel grew displayport MST audio support which is hopefully useful to
        people, and FBC is on by default for GEN9+ (so people know where to
        look for regressions). AMDGPU has a lot of fixes that would like new
        firmware files installed for some GPUs.
      
        Other than that it's pretty scattered all over.
      
        I may have a follow up pull request as I know BenH has a bunch of AST
        rework and fixes and I'd like to get those in once they've been tested
        by AST, and I've got at least one pull request I'm just trying to get
        the author to fix up.
      
        Core:
         - drm_mm reworked
         - Connector list locking and iterators
         - Documentation updates
         - Format handling rework
         - MMU-less support for fbdev helpers
         - drm_crtc_from_index helper
         - Core CRC API
         - Remove drm_framebuffer_unregister_private
         - Debugfs cleanup
         - EDID/Infoframe fixes
         - Release callback
         - Tinydrm support (smaller drivers for simple hw)
      
        panel:
         - Add support for some new simple panels
      
        i915:
         - FBC by default for gen9+
         - Shared dpll cleanups and docs
         - GEN8 powerdomain cleanup
         - DMC support on GLK
         - DP MST audio support
         - HuC loading support
         - GVT init ordering fixes
         - GVT IOMMU workaround fix
      
        amdgpu/radeon:
         - Power/clockgating improvements
         - Preliminary SR-IOV support
         - TTM buffer priority and eviction fixes
         - SI DPM quirks removed due to firmware fixes
         - Powerplay improvements
         - VCE/UVD powergating fixes
         - Cleanup SI GFX code to match CI/VI
         - Support for > 2 displays on 3/5 crtc asics
         - SI headless fixes
      
        nouveau:
         - Rework securre boot code in prep for GP10x secure boot
         - Channel recovery improvements
         - Initial power budget code
         - MMU rework preperation
      
        vmwgfx:
         - Bunch of fixes and cleanups
      
        exynos:
         - Runtime PM support for MIC driver
         - Cleanups to use atomic helpers
         - UHD Support for TM2/TM2E boards
         - Trigger mode fix for Rinato board
      
        etnaviv:
         - Shader performance fix
         - Command stream validator fixes
         - Command buffer suballocator
      
        rockchip:
         - CDN DisplayPort support
         - IOMMU support for arm64 platform
      
        imx-drm:
         - Fix i.MX5 TV encoder probing
         - Remove lower fb size limits
      
        msm:
         - Support for HW cursor on MDP5 devices
         - DSI encoder cleanup
         - GPU DT bindings cleanup
      
        sti:
         - stih410 cleanups
         - Create fbdev at binding
         - HQVDP fixes
         - Remove stih416 chip functionality
         - DVI/HDMI mode selection fixes
         - FPS statistic reporting
      
        omapdrm:
         - IRQ code cleanup
      
        dwi-hdmi bridge:
         - Cleanups and fixes
      
        adv-bridge:
         - Updates for nexus
      
        sii8520 bridge:
         - Add interlace mode support
         - Rework HDMI and lots of fixes
      
        qxl:
         - probing/teardown cleanups
      
        ZTE drm:
         - HDMI audio via SPDIF interface
         - Video Layer overlay plane support
         - Add TV encoder output device
      
        atmel-hlcdc:
         - Rework fbdev creation logic
      
        tegra:
         - OF node fix
      
        fsl-dcu:
         - Minor fixes
      
        mali-dp:
         - Assorted fixes
      
        sunxi:
         - Minor fix"
      
      [ This was the "fixed" pull, that still had build warnings due to people
        not even having build tested the result. I'm not a happy camper
      
        I've fixed the things I noticed up in this merge.      - Linus ]
      
      * tag 'drm-for-v4.11-less-shouty' of git://people.freedesktop.org/~airlied/linux: (1177 commits)
        lib/Kconfig: make PRIME_NUMBERS not user selectable
        drm/tinydrm: helpers: Properly fix backlight dependency
        drm/tinydrm: mipi-dbi: Fix field width specifier warning
        drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized
        drm/sti: fix build warnings in sti_drv.c and sti_vtg.c files
        drm/amd/powerplay: fix PSI feature on Polars12
        drm/amdgpu: refuse to reserve io mem for split VRAM buffers
        drm/ttm: fix use-after-free races in vm fault handling
        drm/tinydrm: Add support for Multi-Inno MI0283QT display
        dt-bindings: Add Multi-Inno MI0283QT binding
        dt-bindings: display/panel: Add common rotation property
        of: Add vendor prefix for Multi-Inno
        drm/tinydrm: Add MIPI DBI support
        drm/tinydrm: Add helper functions
        drm: Add DRM support for tiny LCD displays
        drm/amd/amdgpu: post card if there is real hw resetting performed
        drm/nouveau/tmr: provide backtrace when a timeout is hit
        drm/nouveau/pci/g92: Fix rearm
        drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios
        drm/nouveau/hwmon: expose power_max and power_crit
        ..
      ef96152e
    • Dave Airlie's avatar
      lib/Kconfig: make PRIME_NUMBERS not user selectable. · 64a57719
      Dave Airlie authored
      Linus doesn't like it user selectable, so kill it until
      someone needs it for something else.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      64a57719
    • Noralf Trønnes's avatar
      drm/tinydrm: helpers: Properly fix backlight dependency · 7fef80a4
      Noralf Trønnes authored
      BACKLIGHT_CLASS_DEVICE was selected in the last version of the
      tinydrm patchset to fix the backlight dependency, but the
      ifdef CONFIG_BACKLIGHT_CLASS_DEVICE was forgotten. Fix that.
      Signed-off-by: default avatarNoralf Trønnes <noralf@tronnes.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      7fef80a4
    • Noralf Trønnes's avatar
      drm/tinydrm: mipi-dbi: Fix field width specifier warning · ce8c0137
      Noralf Trønnes authored
      This warning is seen on 64-bit builds in functions:
         'mipi_dbi_typec1_command':
         'mipi_dbi_typec3_command_read':
         'mipi_dbi_typec3_command':
      
      >> drivers/gpu/drm/tinydrm/mipi-dbi.c:65:20: warning: field width specifier '*' expects argument of type 'int', but argument 5 has type 'size_t {aka long unsigned int}' [-Wformat=]
            DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, len, data); \
                             ^
         include/drm/drmP.h:228:40: note: in definition of macro 'DRM_DEBUG_DRIVER'
           drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
                                                 ^~~
      >> drivers/gpu/drm/tinydrm/mipi-dbi.c:671:2: note: in expansion of macro 'MIPI_DBI_DEBUG_COMMAND'
           MIPI_DBI_DEBUG_COMMAND(cmd, parameters, num);
           ^~~~~~~~~~~~~~~~~~~~~~
      
      Fix by casting 'len' to int in the macro MIPI_DBI_DEBUG_COMMAND().
      There is no chance of overflow.
      Signed-off-by: default avatarNoralf Trønnes <noralf@tronnes.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      ce8c0137
    • Noralf Trønnes's avatar
      drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized · b401f343
      Noralf Trønnes authored
      Fix this warning:
      drivers/gpu/drm/tinydrm/mipi-dbi.c: In function ‘mipi_dbi_debugfs_command_write’:
      drivers/gpu/drm/tinydrm/mipi-dbi.c:905:8: warning: ‘cmd’ may be used uninitialized in this function [-Wmaybe-uninitialized]
        ret = mipi_dbi_command_buf(mipi, cmd, parameters, i);
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      
      cmd can't be used uninitialized, but to satisfy the compiler,
      initialize it to zero.
      Signed-off-by: default avatarNoralf Trønnes <noralf@tronnes.org>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      b401f343
    • Linus Torvalds's avatar
      Merge tag 'usercopy-v4.11-rc1.fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · d5500a07
      Linus Torvalds authored
      Pull usercopy test fix from Kees Cook:
       "Fix for non-MMU ARM testing, from Arnd Bergmann"
      
      * tag 'usercopy-v4.11-rc1.fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
        usercopy: ARM NOMMU has no 64-bit get_user
      d5500a07